Within Pakistan, roughly __________ mha of irrigated acreage suffers from salinity issues:
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Answer: B. 5.7 mha
Explanation
Salinity severely limits agricultural productivity across millions of hectares in Pakistan. Approximately 5.7 million hectares of irrigated lands suffer from severe salinity problems. Agricultural surveys consistently confirm this exact extent of salt-affected farmland regions. Soil salinity arises when irrigation water deposits excessive soluble mineral salts locally. Evaporation leaves behind harmful sodium chloride and other mineral salt residues constantly. Over time, salt accumulation destroys soil structure and severely impairs plant root growth.
Farmers struggle with reduced crop yields in these salt-affected agricultural production zones. Reclamation projects require costly drainage systems and gypsum amendments to restore productivity. Food security in arid developing nations depends heavily on managing soil salinity threats. Option A suggests an exaggerated acreage that exceeds standard official government estimates. Option C represents an incorrect measurement often confused with different regional surveys. Option D is incorrect because the accurate numerical value is explicitly listed.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
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